Get Creases Out Of Projection Screen Getting Wrinkles/crease Out Of Projection Screen?

Getting wrinkles/crease out of projection screen? - get creases out of projection screen

I have a canvas, and comes in front of the aquarium. My wife could not lift, even if only one corner bent and raised to a hook, so it can feed the fish, but never leave. Days later, I go and see me go forth, but now there are a few wrinkles and a crease on the screen.

I think this is not a common problem, but it is possible for them to get wrinkles / fold out, or I can just buy a new one?

Thank you!